the answer is 427608$427608$ for the number with 2$2$ between 100000$100000$ and 999999$999999$.i I create program to count the number with number two bet 100000between $100000$ and 999999$999999$. Here is the code I used
for (int num = 100000; num < 999999; num++) { if (num.ToString().Contains("2")) { numberWithTwo.Add(num); count++; } } Console.WriteLine("Total number that contain number 2 is :"+ count); Console.ReadLine();
for (int num = 100000; num < 999999; num++)
{
if (num.ToString().Contains("2"))
{
numberWithTwo.Add(num);
count++;
}
}
Console.WriteLine("Total number that contain number 2 is :"+ count);
Console.ReadLine();